how to use apply with a function created by ourselfs...?
On Mon, 21 Apr 2003, ANA KOZOMARA wrote:
..hey thanks for the answer, both of you... but :-(, I don't seem to have an answer to my problem... I tried with what u suggested, but it doesn't work yet... so I will precise it... I have a data frame... and I would like to apply the function "prediction" which acts on two vectors prediction(linear,ind), to my data frame,I mean to all the rows of my data frame... something like a function "Map" in Mathematica... Shortly, I want to apply function "prediction" to a list of arguments, not to a single argument...
I don't know Mathemtica but it sounds like you want mapply() (in R 1.7.0). -thomas